I am having a huge lagging problem with this map.

I've tried all the available anti-lag scripts out there, but they all clashed with another script that I have and cause the game to crash. The game works okay without any anti-lag scripts, but this map lags so bad that I just can't turn a blind eye on.
Is there any short script that would stop the lag only in this particular map? I don't want to run into compatibility issues.